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Which type of monitor produces an image by manipulating light within a layer of liquid crystal cells?


A) CRT
B) LCD
C) Gas plasma
D) All of the above

Correct Answer

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A laser virtual keyboard is packaged in a case smaller than a soda can.

Correct Answer

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The ____________________ is the most commonly used input device for entering data into a computer.

Correct Answer

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Identify the letter of the choice that best matches the phrase or definition.

Premises
Reads encoded information on the back of credit cards.
Uses a light source to read characters, marks, and codes.
Reads lines that are printed on products.
Converts images into an electronic form that can be stored in a computer's memory.
Uses Bluetooth technology to scan data and transmit it to a computer.
Responses
Image scanner
Wireless scanner
Optical character recognition (OCR)
Magnetic scanner
Bar code scanner

Correct Answer

Reads encoded information on the back of credit cards.
Uses a light source to read characters, marks, and codes.
Reads lines that are printed on products.
Converts images into an electronic form that can be stored in a computer's memory.
Uses Bluetooth technology to scan data and transmit it to a computer.

Case 2-2 Clyde is setting up the new computer that he just bought and wants to attach peripheral devices to the USB ports. By using a USB hub, Clyde could connect up to ____ different peripherals with a single connector.


A) 8
B) 40
C) 63
D) 127

Correct Answer

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Speakers are a type of specialized input device.

Correct Answer

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